Results 31 to 40 of about 43,525 (332)

Transition from 3D conformal to modern modulated craniospinal radiotherapy

South African Journal of Oncology, 2022
Background: Achieving optimal tumour coverage during craniospinal irradiation (CSI) is a challenge. Whilst several critical organs are at risk of radiation-induced toxicity, if target volume structures like the cribriform plate receive less than 95% of ...
Hamida Fakira, Thurandrie Naiker, Brendon Smith, Annemari Groenewald   +3 more
doaj   +1 more source

Optimized Conformal Total Body Irradiation methods with Helical TomoTherapy and Elekta VMAT: Implementation, Imaging, Planning and Dose Delivery for Pediatric Patients

Frontiers in Oncology, 2022
Optimized conformal total body irradiation (OC-TBI) is a highly conformal image guided method for irradiating the whole human body while sparing the selected organs at risk (OARs) (lungs, kidneys, lens). This study investigated the safety and feasibility
A. Loginova, D. Tovmasian, A. Lisovskaya, D. Kobyzeva, M. Maschan, A. Chernyaev, O. Egorov, A. Nechesnyuk   +7 more
semanticscholar   +1 more source

Establishment of criteria for gamma-analysis of individual dose distributions during verification of radiotherapy high-tech treatment plans for cancer patients

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2022
A typical process for verification of treatment plans in intensity-modulated radiation therapy is described. The main errors and uncertainties that arise in the course of planning dose distribution and in the process of dose delivery are listed.
M. N. Piatkevich, H. I. Brynkevich, E. V. Titovich   +2 more
doaj   +1 more source

A Prospective Phase II Study of Automated Non-Coplanar VMAT for Recurrent Head and Neck Cancer: Initial Report of Feasibility, Safety, and Patient-Reported Outcomes

Cancers, 2022
Simple Summary The delivery of higher radiation doses has been shown to increase local control, and ultimately survival, for head and neck cancer patients, but highly conformal dose distributions are necessary to minimize normal tissue toxicity. Varian’s
K. Woods, T. Ma, K. Cook, E. Morris, Yu Gao, K. Sheng, A. Kishan, J. Hegde, C. Felix, V. Basehart, Kelsey Narahara, Zhouhuizi Shen, S. Tenn, M. Steinberg, R. Chin, M. Cao   +15 more
semanticscholar   +1 more source

Impact of Multi-criteria Optimization on 6-MV Flattening Filter-Free Volumetric Modulated Arc Therapy for Craniospinal Irradiation [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: Volumetric modulated arc therapy (VMAT) is an advanced technique used for radiotherapy treatment using different optimization modes. The present study aimed to evaluate Multi-criteria Optimization (MCO) influence on VMAT for Craniospinal ...
Mohandass P, KHANNA D, Selvaganapathi A, Nishaanth B, Saravanan C, Thiyagaraj T, Narendra Kumar Bhalla, abhishek Puri, Blessy Mohandass   +8 more
doaj   +1 more source

Simultaneous integrated boost in locally advanced cervical cancer patients ineligible for brachytherapy: Dosimetric comparison of VMAT versus helical tomotherapy. [PDF]

J Appl Clin Med Phys
Abstract Objective This retrospective, exploratory study evaluated the dosimetric comparison and feasibility of simultaneous integrated boost (SIB) delivered with volumetric modulated arc therapy (VMAT) and helical tomotherapy (HT) in patients with locally advanced cervical cancer ineligible for brachytherapy (BRT).
Sekmen Mİ, Koca T, Çetmi DA, Bilek Y, Aksoy RA, Sarpün İH, Korcum AF, Tunçel N.   +7 more
europepmc   +2 more sources

Multi-institution model (big model) versus single-institution model of knowledge-based volumetric modulated arc therapy (VMAT) planning for prostate cancer

Scientific Reports, 2022
We established a multi-institution model (big model) of knowledge-based treatment planning with over 500 treatment plans from five institutions in volumetric modulated arc therapy (VMAT) for prostate cancer.
J. Fukunaga, M. Tamura, Y. Ueda, T. Kamima, Yumiko Shimizu, Y. Muraki, K. Nakamatsu, H. Monzen   +7 more
semanticscholar   +1 more source

Multicriteria optimization informed VMAT planning [PDF]

Medical Dosimetry, 2014
We developed a patient-specific volumetric-modulated arc therapy (VMAT) optimization procedure using dose-volume histogram (DVH) information from multicriteria optimization (MCO) of intensity-modulated radiotherapy (IMRT) plans. The study included 10 patients with prostate cancer undergoing standard fractionation treatment, 10 patients with prostate ...
Huixiao, Chen, David L, Craft, David P, Gierga   +2 more
openaire   +2 more sources

Dosimetric and radiobiological comparison of simultaneous integrated boost radiotherapy for early stage right side breast cancer between three techniques: IMRT, hybrid IMRT and hybrid VMAT

Radiation Oncology, 2022
This study aimed at evaluating the clinical impact of full intensity-modulated radiotherapy (IMRT), hybrid IMRT (H-IMRT) and hybrid volumetric-modulated arc therapy (H-VMAT) for early-stage breast cancer with simultaneous integrated boost (SIB), in terms
Suyan Bi, R. Zhu, Z. Dai
semanticscholar   +1 more source

Automatic feathering algorithm for VMAT craniospinal irradiation: a comprehensive comparison with other VMAT planning strategies [PDF]

Physica Medica, 2021
In craniospinal irradiation, field matching is very sensitive to intrafraction positional uncertainties in cranio-caudal direction, which could lead to severe overdoses/underdoses inside the planning target volume. During the last decade, significant efforts were made to develop volumetric-modulated arc therapy strategies, which were less sensitive to ...
Michele, Maddalo, Giovanna, Benecchi, Luisa, Altabella, Caterina, Ghetti, Nunziata, D'Abbiero   +4 more
openaire   +2 more sources